Delaware Division,
connected.
Delaware Division of Corporations — the most widely used corporate jurisdiction in the US. We form an LLC or C-Corp depending on your case.…
LLC formation in Delaware with a registered agent in Wilmington. Standard to validate; PRO to actually operate with EIN, banking and full advisory support.
Form your LLC in Delaware with basic state compliance included. Ideal for validating your project before you start operating.
Services marked with a dash are available as add-ons on a quote basis through Aiden Tax Filing and the Aiden Startup partner network.
With a traditional gestoría, each piece is contracted and billed separately. Scope also varies between providers (a gestoría may include full accounting): always compare what each one includes.
Swipe to see each integration. Tap + to see what we do with it.
Delaware Division of Corporations — the most widely used corporate jurisdiction in the US. We form an LLC or C-Corp depending on your case.…
Internal Revenue Service, the US federal tax authority. Obtaining an EIN is included in the PRO plan. Applicable federal filings depend on t…
Assisted Mercury account application for Delaware companies formed with Aiden. Account opening and timing depend on review and approval by M…
Your Stripe account integrated with Books. Ideal if your Delaware company invoices globally in USD or EUR.…
If you already use Xero, we can migrate your books or sync reports. An alternative if you're coming from another system.…
Private channel with your Delaware advisor on the PRO plan. Also includes automatic IRS and Delaware deadline alerts.…
What follows are not client testimonials: they are hypothetical examples of situations we commonly handle, using the real terms of the offer.
Hypothetical examples: these are not testimonials or reviews from real clients. The terms quoted (timelines, SLAs, prices) are those of the current published offer.
Annual or specialised services not included in any monthly plan. We handle these as add-ons whenever you need them.
IRS filings according to the company’s tax classification, transactions and tax year.
Support for your personal tax return in Spain, compatible with your US LLC.
Specialised response when the IRS contacts you or opens a case.
Differences in taxation, formation time, banking, and ideal use cases for each jurisdiction.
What's included and what's extra with each alternative, based on the prices published on their official websites.
$500 one-time · annual compliance and tax filing sold separately
Compare the real scopeFormation $99 · Agent, Tax Filing and Mailroom separate, per year
Compare the real scopeStarter $297/year + state fees · Tax and Compliance $1,999/year
Compare the real scope$819 lifetime · Delaware C-Corp only · external tax filing
Compare the real scopePrices checked on the official websites in September 2026. See all comparisons.
Companies formed in the United States, including Delaware LLCs and C-Corps, are exempt from FinCEN BOI reporting. It is not presented as a mandatory filing included in these plans. The exemption does not remove other tax or state obligations. See the official FinCEN information.
Delaware is the most widely used corporate jurisdiction in the US thanks to its business-friendly laws, its specialised court (Court of Chancery), and its services infrastructure. American VCs almost always invest in Delaware C-Corps. If your product is global or your main market is the US, it makes a lot of sense.
The choice depends on the members, business activity, taxation and planned financing. An LLC does not have a single tax treatment: the IRS considers the number of members and any tax elections made. Before choosing a C-Corp for a funding round, confirm the structure investors require and its tax implications. Standard includes LLC formation without EIN application assistance; PRO includes EIN application assistance and the banking and conversion support described in the plan, subject to each process’s requirements.
The EIN (Employer Identification Number) is the company’s federal tax identification number issued by the IRS. It may be needed for tax and banking procedures; requirements for opening accounts and using payment services depend on the provider. The PRO plan includes assistance with the application. Standard includes state formation in Delaware; you can purchase EIN application assistance separately or upgrade to PRO. The IRS issues EINs free of charge: Aiden’s service covers assistance with the application.
Teams comes included in PRO at no extra cost, just like in the UK. Invite as many members as you need (co-founders, accountant, assistant, advisors) with custom permissions. Only the admin pays the PRO subscription. If you're on the Standard LLC plan, this feature isn't available, and you'd need to move up to PRO to use it.
Company formation and the Mercury account application are handled online. The account application is subject to the provider’s eligibility, documentation and approval requirements; forming the company does not guarantee that an account will be opened.
It's a person or company with a physical address in Delaware that receives legal communications on behalf of your company (lawsuits, state notices, etc.). It's a legal requirement in Delaware. It's included at no extra cost in every plan.
Forming an LLC in Delaware does not by itself determine how its profits are taxed in Spain. It is necessary to assess whether the entity meets Spain’s requirements for the income attribution regime and which obligations apply to the company and its members. Your adviser should review the case before filing returns. Delaware state obligations and federal IRS returns are reviewed separately; assistance with the latter is available as an additional Aiden Tax Filing service.
It's a fixed annual tax of $300 for LLCs (regardless of profit). It's due before June 1st each year. For C-Corps, it's calculated with a different formula based on authorized shares. We calculate it and remind you when and how to pay it — the official fee ($300 or the C-Corp calculation) you pay directly to the Delaware Division of Corporations. It's not an Aiden fee, it's a mandatory state tax.
Mercury is a financial platform for businesses offering banking services through partner banks. Applications are submitted online and are subject to its requirements and approval. Available features and deposit protection depend on the product and its terms. Check Mercury’s current information before applying for an account.
Yes. Delaware allows an LLC to convert into a corporation with the required approvals and filings. Generally, the conversion continues the entity’s existence and does not require its dissolution. Under the PRO plan, we structure the process; timing depends on documentation, approvals and the legal and tax review of the case.
Obligations depend on the company’s tax classification, transactions and tax year:
• Foreign-owned single-member LLC: if treated as a disregarded entity with reportable transactions, it may require Form 5472 and pro forma Form 1120.
• LLC treated as a partnership: generally files Form 1065 and Schedule K-1, subject to IRS exceptions.
• C-Corp: generally files Form 1120 even without taxable income.
Check the instructions for the applicable tax year for deadlines, extensions and penalties.
These forms are NOT included in the monthly plans due to their annual, specialised nature (signature under penalty of perjury, handling IRS communications). They're managed through Aiden Tax Filing from €299/year per LLC.
Sign up entirely online, with no prior call required (advisor optional). Company formation timing depends on complete documentation and processing by the relevant registry.
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